GRT7-TH4E AVR – WEG Analog
$912.00
The WEG Grameyer Original GRT7-TH4E is a high-performance analog Automatic Voltage Regulator (AVR) designed for brushless synchronous generators.
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Description
The WEG Grameyer GRT7-TH4E is a high-performance analog Automatic Voltage Regulator (AVR) designed for brushless synchronous generators. It is the factory-standard excitation solution for WEG GTA series alternators and is widely used across various industrial generator brands.
The GRT7-TH4E provides a continuous excitation current of 5A (7A peak), ensuring stable voltage regulation even during sudden load steps. Featuring an encapsulated design, it is highly resistant to vibration and humidity, making it suitable for both land-based and marine engine rooms. Its precision analog circuitry ensures a fast transient response and high-quality power output.
Product Details
SPECIFICATION INSTALLATION AND ADJUSTMENTS
Technical Specifications
| Sensing Input | 170-480 VAC, 1 Phase 2 Wire (Configurable) |
|---|---|
| Power Input | 170-277 VAC, 1 Phase 2 Wire |
| Excitation Output | Continuous 5.0 ADC, Max 7.0 ADC (10s) |
| Voltage Regulation | < ± 0.5% |
| Protection | Under Frequency (U/f), Built-in Fuse (5A) |
Adjustments & Tuning
- VOLTS: Fine adjustment of the generator’s nominal output voltage.
- STAB: Sets the stability levels to prevent voltage hunting/pumping.
- U/f (FREQ): Sets the under-frequency protection knee point.
- DROOP: Controls the voltage drop for parallel operation (requires external CT).
- Internal Fuse: Protects the module against excitation circuit overcurrent.
Key Features
Industrial Features:
- WEG Quality: Designed specifically for the high standards of WEG industrial generators.
- Precision Regulation: Maintains output voltage within ±0.5% under varying load conditions.
- Parallel Running: Full capability for load sharing with other generators via quadrature droop.
- Robust Encapsulation: Solid-state, potted electronics protect against moisture and salt air.
- Wide Compatibility: Works with sensing voltages from 220V up to 440V systems.
Manufacturer Reference: WEG Grameyer GRT7-TH4E / 10045564.
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